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Filtering by: Subject Douglas fir -- Thinning -- Oregon -- Willamette National Forest Resource Type Masters Thesis

Spatial and temporal dynamics of the Douglas-fir bark beetle (Dendroctonus pseudotsugae, Hopk.) in the Detroit Ranger District, Oregon : a landscape ecology perspective

Creator:

Powers, Jennifer Sarah

Abstract:

I developed a conceptual model of Douglas-fir bark beetle dynamics and associated host mortality across spatial and temporal scales. I proposed that a hierarchy of factors influence host resistance to attack at different spatial scales. I then tested this model by measuring the association between the occurrence of beetle-kill and...

Resource Type:

Masters Thesis

Full Text:

partial autocorrelation functions for Douglas-fir beetle activity in the Willamette National Forest
Spatial and temporal patterns of "super-old" Douglas-fir trees of the central western Cascades, Oregon

Creator:

Giglia, Sheryl K.

Abstract:

Old-growth in the Pacific Northwest is generally defined as trees that are more than 200 years old. A great deal of analysis and discussion about old-growth forests in western Oregon, however, has focused on the relatively widespread 400 to 500 year age class of primarily Douglas-fir (Pseudotsuga menziesii) trees. The...

Resource Type:

Masters Thesis